Free woodworking plans to build DIY Cold Frames. The cold frames are easy to take apart so you can put them away when you're not using them. Great idea if you have limited growing space and want to start seeds outdoors earlier or extend your growing season.
Set them up in your vegetable garden in early spring when it's still too cold to plant outside and you don't have room or lights to start indoors. When the fear of frost is gone, you can remove the cold frames and stack them up neatly in your garage or shed. Don't take up much space at all.
Check out the DIY Cold Frame plans from OrganicLawnDIY.com.